Flashcards in Chapter 28 Deck (45):
organ that secretes testosterone
Interstitial cells in seminiferous tubules
Secretes androgen binding protein
Sustentacular cells in seminiferous tubules
What does a increase level of testosterone result in?
Spermatogenesis, sex drive, development of secondary sex characteristics
Results in development of follicle, secondary sex characteristics, maintain body temperature, bone density, regulate production of cholesterol
Production of sperm within seminiferous tubules
Diploid cells that remain dormant until puberty for males
What happens to the spermatogonia at puberty?
Begin dividing by mitosis
Undergo meiosis I and II to produce 2 spermatids
Located near the lumen of seminiferous tubules
Final stage of spermatogenesis
Mature sperm, composed of acrosome cap, contains digestive enzymes, tail for locomotion, mid piece that contains mitochondria
Composed of seminal fluid from accessory glands combined with sperm
Alkaline fluid, fructose, prostaglandins, helps with going through the vagina
Citric acid, mucin, seminal plasm, prostate specific antigens,
Mucin for lubrication
Substance that causes the vasodilation of erectile tissue, compress venules, increases blood flow
Period of time of intense feelings of pleasure and expulsion of semen
Occurs when sympathetic nervous system stimulates smooth muscles of the urethra
Time where men cannot attain another erection
Oocyte + follicle cells
Primary oocyte, single layer of flattened follicle cells
Primary oocyte + one of more cuboidal follicle cells = granolas cells
Primary oocyte + many layers of granulosa cells + thecal cells + antrum
Secondary oocyte + many layers of granulosa cells + thecal cells + antrum
Remnants of follicle, collapsed folds of granulosa cells
Degenerated corpus luteum
Maturation of primary oocyte to secondary oocyte within the ovary
FSH and LH stimulate primordial follicles to mature into primary follicles, thecal cells secrete androgens, granolas cells convert androgens into estrogen
Release of oocyte from vesicular follicle; stimulation of hypothalamus and anterior pituitary gland surge in LH
LH converts remaining follicle cells become cuprous lute, progesterone and estrogen are secreted to stabilize and build uterine lining to prepare for implantation.
What happens to the corpus luteum if no fertilization occurs?
slowly degenerate next 10-12 days
What does the corpus luteum become after it degenerates?
as estrogen and progesterone decrease ___ decreases
what happens to the corpus luteum if fertilization occurs?
Stays that way for 3 months, estrogen and progesterone increase, degenerates after placenta is formed
Outer layer of uterus
Middle layer of uterus
Development of endometrium
Sloughing off functional layer of endometrium, only occurs if fertilization does not occur
Development of new functional layer, secondary and vesicular follicles developing= increase in granulosa cells
Increase thickness of functional layer, increase vascularization, develop uterine glands
Provides nutrition until placenta forms
During the sexual excitement of females, where does blood flow increase?
Mammary glands, clitoris, labia, wall of vagina
When is the onset of menopause?